. The Street railway journal . 700-HP BOILER WITH SUPERHEATER AT THE SECOND STREET AND WYOMINGAVENUE STATION OF THE PHILADELPHIA RAPID TRANSIT COMPANY the bottom of the drum and over the blow-off opening, makingthe blow-off effective for its full length. The tubes are expanded into the junction boxes, which arelike return bends, holding two tubes. This arrangement per-mits the free and independent expansion of every tube withoutstrain on any joint. The flexibility of the construction is suchthat the boxes can be separated several inches at any point foradmittance to the baffles or for renewing
. The Street railway journal . 700-HP BOILER WITH SUPERHEATER AT THE SECOND STREET AND WYOMINGAVENUE STATION OF THE PHILADELPHIA RAPID TRANSIT COMPANY the bottom of the drum and over the blow-off opening, makingthe blow-off effective for its full length. The tubes are expanded into the junction boxes, which arelike return bends, holding two tubes. This arrangement per-mits the free and independent expansion of every tube withoutstrain on any joint. The flexibility of the construction is suchthat the boxes can be separated several inches at any point foradmittance to the baffles or for renewing a tube, giving suf-ficient opening to permit the removal of 18-ft. tubes in a room. Each tube is accessible for removal without disturb- VIEW THROUGH MANHOLE OF STEAM DRUM OF CONVERTEDBOILER, SEPT. 17, 1904, SHOWING SCALE DISCHARGEDFROM TUBE beyond the non-return valve. The flow in the element is for-ward and back alternately through each tube in the top row,then down to ■ the next row, and so on, finally dischar
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
